Ferret is a free, full-featured App.net client for Windows 8. With Ferret, you can view multiple auto-refreshing streams at one time and rearrange your streams using drag and drop.
Features of Ferret are:
Post, reply, repost, repost with comments and star/unstar posts.
Private message integration. Create new channels. Post messages to channels. View a channels list with indicators to show which channels have unread messages.
Choose to view photos attached to posts inline with the post, or have an icon displayed indicating a photo is attached.
Follow/unfollow and mute/unmute users, and view a comprehensive user profile for any App.net user.
View threads/conversations and search for posts by username or hashtag.
Your column configuration is automatically saved when you exit the app, and loaded when you start the app.
Exclude posts by keyword.
Full support for multiple accounts. You can add multiple accounts and then switch between them using the settings menu.
Now has full support for push notifications by live tile and/or toast notification.